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Question

If 'X + Y' means 'X is the brother of Y', 'X $\times$ Y' means 'X is the father of Y' and 'X / Y' means 'X is the mother of Y', then which of the following would mean 'R is the son of S'?

This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper (8-Mar-2021) (Shift 2)
The correct answer is
$S \times R + T$

Analyzing Blood Relation Codes

We are given the following relationship codes:

  • $X + Y$ means X is the brother of Y.
  • $X × Y$ means X is the father of Y.
  • $X / Y$ means X is the mother of Y.

We need to find the expression that means 'R is the son of S'. This implies that S is the parent of R (father or mother), and R is male.

Evaluating Options for 'R is the son of S'

Option 1: $S \times T \times R$

  • $S \times T$ means S is the father of T.
  • $T \times R$ means T is the father of R.
  • Combining these, S is the father of T, and T is the father of R. Therefore, S is the grandfather of R. This does not match 'R is the son of S'.

Option 2: $S / R / T$

  • $S / R$ means S is the mother of R. This part is consistent with S being a parent of R.
  • $R / T$ means R is the mother of T. This implies R is female.
  • Since R must be the 'son' (implying male) of S, R cannot be the mother of T. This option is incorrect.

Option 3: $S \times R + T$

  • $S \times R$ means S is the father of R. This fits the condition that S is a parent of R and implies R is male.
  • $R + T$ means R is the brother of T. This further confirms R is male.
  • Therefore, S is the father of R, which means 'R is the son of S'. This option is correct.

Option 4: $S + R \times T$

  • $S + R$ means S is the brother of R.
  • This means S and R are siblings. Neither is the parent of the other. This does not match 'R is the son of S'.

Conclusion

Based on the analysis, the expression $S \times R + T$ correctly represents the relationship 'R is the son of S'.

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Similar Questions

  1. In a certain code language,
    A + B means 'A is the husband of B',
    A − B means 'A is the brother of B',
    A x B means 'A is the sister of B' and
    A ÷ B means 'A is the daughter of B'.

    How is C related to J if 'C − E ÷ G + I x J'?
  2. In a certain code language,
    A # B means ‘A is the mother of B’,
    A % B means ‘A is the brother of B’,
    A - B means ‘A is the wife of B’ and
    A @ B means ‘A is the father of B’.

    How is C related to U if ‘C - O @ M # B % U’?
  3. If A+B means A is the husband of B, A/B means A is the sister of B and A*B means A is the son of B. Which of the following shows M is the daughter of N?
  4. Mo > No means that Mo is the daughter of No.  

    Mo # No means Mo is the father of No.

    Mo $ No means Mo is the mother of No. 

    Mo / No means Mo is the brother of No. 

    Based on the above, how is Po related to Ko in the given expression?  

    Po $ Qo # Ro / To > Ko

     

  5. 'R $ S' means that R is the brother of S.
    'R @ S' means R is the wife of S.
    'R # S' means R is the daughter of S.
    'R > S' means R is the father of S.
    Based on the above, which option indicates that D is the father-in-law of A?

  6. If L + M means ‘L is the son of M’, L - M means ‘L is the husband of M’, L × M means ‘L is the brother of M’ and L ÷ M means ‘L is the mother of M’, what does A × B ÷ C mean?
  7. 'A#B' means 'A is the brother of B', 'A^B' means 'A is the daughter of B', 'A*B' means 'A is the aunt of B' and 'A%B' means 'A is the mother of B'. If P*G%U#V^T#Z*V, then how is Z related to G?

  8. In the following relationship chart, $\text{A}\rightarrow\text{B}$ means A is the mother (or any other relationship) of B. Now using the chart, find out how is F related to E.

  9. If A#B means 'A is the brother of B', A^B means 'A is the daughter of B', A*B means 'A is the aunt of B' and A%B means 'A is the mother of B', then, how is Z related to G in S*G%U^Z#X?
  10. If 'A + B' means 'A is the daughter of B', 'A – B' means 'A is the father of B', 'A x B' means 'A is the brother of B' and 'A $\div$ B' means 'A is the wife of B', then 'P + R - Q x S' will mean:

Important Questions from Coded Blood Relation Problems

  1. ‘A # B’ means ‘A is the son of B’.

    ‘A @ B’ means ‘A is the mother of B’.

    ‘A & B’ means ‘A is the wife of B’.

    ‘A % B’ means ‘A is the sister of B’.

    If ‘M @ R % K # G # N & T’, then which of the following statements is NOT correct?

  2. ‘A % B’ means ‘A is the sister of B’.

    ‘A $ B’ means ‘A is the brother of B’.

    ‘A @ B’ means ‘A is the son of B’.

    ‘A & B’ means ‘A is the mother of B’.

    If ‘R % T & Z $ S @ V @ C % Y’, then which of the following statements is NOT correct?

  3. Read the given information carefully and answer the question that follows.

    ‘K $ D’ means ‘K is the father of D’.

    ‘K < D’ means ‘K is the wife of D’.

    ‘K > D’ means ‘K is the daughter of D’.

    'K @ D’ means ‘K is the son of D’.

    How is S related to N in the expression ‘H > R $ S @ T > N’?

  4. ‘R8S’ means ‘R is the father of S’.

    ‘R7S’ means ‘R is the sister of S’.

    ‘R6S’ means ‘R is the brother of S’.

    ‘R2S’ means ‘R is the wife of S’.

    Which of the following expressions represents ‘X is the mother of Y’?

  5. ‘A # B’ means ‘A is the father of B’.

    ‘A % B’ means ‘A is the mother of B’.

    ‘A @ B’ means ‘A is the sister of B’.

    ‘A & B’ means ‘A is the son of B’.

    If ‘G # M # T % S @ H & R & W @ U’, then which of the following statements is NOT correct?

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